Withdraw cash <a href="https://www.bodileys.com/generic-pills-for-viagra-578a.pdf">pfizer viagra 100mg review</a>  This system lies 170 light-years away and is centered on a star, GD 61, that is nearing the end of its life. It is a white dwarf&mdash;the dense hulk left over after a star has used up its fuel for nuclear fusion and cast off its outer gaseous layers into space. These stars start out roughly the size of the sun, and end up condensed into a sphere about the size of Earth.